Based on the GM AD244 chassis, the tried-and-true G series of alternators are our best sellers. Reasonably priced and very durable, these units feature solid copper custom rectifiers for great durability. 6 oversize press fit diodes and premium bearings ensure long life even in hot or abusive conditions. This unit comes equipped with a smaller 1.75 inch diameter alternator pulley, and will require a slightly shorter drive belt for proper belt tension. This alternator integrates normally with the OEM GM engine computer and RVC load sensor, so charging voltage will still be controlled by the ECU. Upgraded positive and negative battery cables must be routed in a specific way on these vehicles in order for the system to function normally, please review the included instructions carefully. Not recommended for use above 5,500 RPM engine speed.
*** THESE ARE NOT COMPATIBLE WITH EXTERNAL REGULATORS. YOU MUST REQUEST EXTERNAL REGULATION WHEN ORDERING. ***
Fitment Guide:
Make | Model | Engine Size | Year |
Buick | Rainier | 5.3L | 2007 - 2008 |
Cadillac | Escalade | 5.7L / 6.0L / 6.2L | 2005 - 2013 |
Chevrolet | Avalanche | All Gas Engines | 2005 - 2013 |
Chevrolet | Express Van | w/2 Pin Plug | 1996 - 2016 |
Chevrolet | Full Size Truck | All Gas Engines | 2005 - 2013 |
Chevrolet | Full Size Truck | 6.6L Duramax | 2008 - 2013 |
Chevrolet | Suburban | All Gas Engines | 2005 - 2014 |
Chevrolet | Tahoe | All Gas Engines | 2005 - 2013 |
Chevrolet | Trailblazer | 5.3L / 6.0L | 2007 - 2009 |
GMC | Envoy | 5.3L | 2007 - 2008 |
GMC | Full Size Truck | 4.3L / 4.8L / 5.3L | 2005 - 2013 |
GMC | Full Size Truck | 6.0L | 2006 - 2013 |
GMC | Full Size Truck | 6.2L | 2009 - 2013 |
GMC | Full Size Truck | 6.6L Duramax | 2007 - 2013 |
GMC | Full Size Truck | 8.1L | 2006 - 2007 |
GMC | Savana Van | w/2 Pin Plug | 2005 - 2016 |
GMC | Yukon | All Gas Engines | 2005 - 2013 |
Hummer | H2 | 6.2L | 2008 - 2009 |
Hummer | h4 | 5.3L | 2008 - 2010 |
2 year performance guarantee.
The MechMan two year warranty applies to Mechman Alternators sold ON or AFTER 07/13/2011. This limited two year warranty allows the customer to return his or her MechMan alternator for repair for a full two years after the alternator purchase date. This warranty does not cover other parts or equipment on the vehicle, and does not cover labor for removal or installation of the alternator. This warranty is VOID if the MechMan alternator is modified, physically abused, misused, improperly installed, or is not used in the application for which it was designed. The MechMan two year warranty is non-transferrable. The customer must include a copy of the original invoice when sending in their alternator in order to receive warranty service. The customer is responsible for shipping the alternator to the Mechman facility for warranty service, Mechman will pay return shipping back to the customer for all alternators under warranty. As an added service, MechMan will also service any MechMan alternator of any age or condition for the cost of parts and return shipping. (We provide the labor to repair the alternator for free!)